How is ocular tuberculosis in HIV infection diagnosed?

Updated: Jul 21, 2021
  • Author: Luca Rosignoli, MD; Chief Editor: Andrew A Dahl, MD, FACS  more...
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Other causes of granulomatous disease, such as sarcoidosis, syphilis, leprosy, and brucellosis should be ruled out. Quantiferon Gold or Purified protein derivative (PPD) skin test can help in identifying previous exposure to tuberculosis. With concurrent HIV, induration of more than 5 mm on PPD testing is considered positive. Positive culture for Mycobacterium tuberculosis is needed to confirm the diagnosis of active tuberculosis and direct treatment.

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